sorry but there is no knob included, although the pot has a line on the end that helps indicate where the power level is set

It’s an especially efficient PWM controllerfor 12VDC loads up to 60W.
You can either dial it in for the desired level or use the switch for a preset power level
of 1%, 10%, 25%, 50% or 100% and back to off again.
You can even mount a second speed step switch (optional - not supplied)
in a remote location off the main circuit board.
Only four connections for power and load. Please Note: you must supply your own 12vdc power source.
The neat thing about this PWM Kit is that you can dim LEDs, or use it as a speed controller for fans and motors.
Got a robot that runs too fast, well slow it down with this great kit.
There are actually a lot of applications for a simple circuit such as this.
Complete kit. Requires Soldering. Click here to see the online assembly / operating instructions

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